EP0621683A3 - Dual mode radiotelephone terminal. - Google Patents

Dual mode radiotelephone terminal. Download PDF

Info

Publication number
EP0621683A3
EP0621683A3 EP94302862A EP94302862A EP0621683A3 EP 0621683 A3 EP0621683 A3 EP 0621683A3 EP 94302862 A EP94302862 A EP 94302862A EP 94302862 A EP94302862 A EP 94302862A EP 0621683 A3 EP0621683 A3 EP 0621683A3
Authority
EP
European Patent Office
Prior art keywords
dual mode
radiotelephone terminal
mode radiotelephone
terminal
dual
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP94302862A
Other languages
English (en)
Other versions
EP0621683A2 (de
Inventor
Heikki Mattila
Jorma Matero
Jaakko Hulkko
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Oyj
Original Assignee
Nokia Mobile Phones Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Mobile Phones Ltd filed Critical Nokia Mobile Phones Ltd
Priority to EP02019254A priority Critical patent/EP1315283A3/de
Publication of EP0621683A2 publication Critical patent/EP0621683A2/de
Publication of EP0621683A3 publication Critical patent/EP0621683A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/38—Angle modulation by converting amplitude modulation to angle modulation
    • H03C3/40—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade
    • H03D7/163—Multiple-frequency-changing all the frequency changers being connected in cascade the local oscillations of at least two of the frequency changers being derived from a single oscillator

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transceivers (AREA)
  • Transmitters (AREA)
EP94302862A 1993-04-23 1994-04-21 Dual mode radiotelephone terminal. Withdrawn EP0621683A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02019254A EP1315283A3 (de) 1993-04-23 1994-04-21 Mobilfunktelefon

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US52335 1987-05-21
US08/052,335 US5392460A (en) 1993-04-23 1993-04-23 Dual mode radiotelephone terminal selectively operable for frequency modulated or phase modulated operation

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP02019254A Division EP1315283A3 (de) 1993-04-23 1994-04-21 Mobilfunktelefon

Publications (2)

Publication Number Publication Date
EP0621683A2 EP0621683A2 (de) 1994-10-26
EP0621683A3 true EP0621683A3 (en) 1996-10-02

Family

ID=21976951

Family Applications (2)

Application Number Title Priority Date Filing Date
EP02019254A Withdrawn EP1315283A3 (de) 1993-04-23 1994-04-21 Mobilfunktelefon
EP94302862A Withdrawn EP0621683A3 (en) 1993-04-23 1994-04-21 Dual mode radiotelephone terminal.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP02019254A Withdrawn EP1315283A3 (de) 1993-04-23 1994-04-21 Mobilfunktelefon

Country Status (2)

Country Link
US (2) US5392460A (de)
EP (2) EP1315283A3 (de)

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US6359940B1 (en) * 1998-03-02 2002-03-19 Qualcomm Incorporated Method and apparatus for downconverting signals transmitted using a plurality of modulation formats to a common intermediate frequency range
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FI106491B (fi) 1998-08-12 2001-02-15 Nokia Mobile Phones Ltd Menetelmä ja laitteisto radiorajapinnan datanopeuden saumattomaksi muuttamiseksi piirikytketyssä välityksessä
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US6370371B1 (en) 1998-10-21 2002-04-09 Parkervision, Inc. Applications of universal frequency translation
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US7236754B2 (en) 1999-08-23 2007-06-26 Parkervision, Inc. Method and system for frequency up-conversion
US6049706A (en) 1998-10-21 2000-04-11 Parkervision, Inc. Integrated frequency translation and selectivity
US6542722B1 (en) 1998-10-21 2003-04-01 Parkervision, Inc. Method and system for frequency up-conversion with variety of transmitter configurations
US6704549B1 (en) 1999-03-03 2004-03-09 Parkvision, Inc. Multi-mode, multi-band communication system
US6704558B1 (en) 1999-01-22 2004-03-09 Parkervision, Inc. Image-reject down-converter and embodiments thereof, such as the family radio service
US6853690B1 (en) 1999-04-16 2005-02-08 Parkervision, Inc. Method, system and apparatus for balanced frequency up-conversion of a baseband signal and 4-phase receiver and transceiver embodiments
US6879817B1 (en) 1999-04-16 2005-04-12 Parkervision, Inc. DC offset, re-radiation, and I/Q solutions using universal frequency translation technology
US7065162B1 (en) 1999-04-16 2006-06-20 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same
US7110444B1 (en) 1999-08-04 2006-09-19 Parkervision, Inc. Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations
US7693230B2 (en) 1999-04-16 2010-04-06 Parkervision, Inc. Apparatus and method of differential IQ frequency up-conversion
US8295406B1 (en) 1999-08-04 2012-10-23 Parkervision, Inc. Universal platform module for a plurality of communication protocols
US6717981B1 (en) * 1999-12-14 2004-04-06 Koninklijke Philips Electronics N.V. Transmitter image suppression in TDD transceivers
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US6549153B2 (en) * 2000-10-25 2003-04-15 Telefonaktiebolaget Lm Ericsson (Publ) Digital to analog conversion method and apparatus
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JP3961422B2 (ja) * 2000-10-26 2007-08-22 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 直接変換無線トランシーバ
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US6985702B2 (en) * 2001-02-23 2006-01-10 Koninklijke Philips Electronics N.V. Transceiver with frequency multiplier tracked to frequency generator
JP2003060441A (ja) * 2001-08-10 2003-02-28 Toshiba Corp ダブルバランスミキサー回路とそれを用いた直交復調回路
US6480046B1 (en) * 2001-08-16 2002-11-12 Ericsson Inc. Transmitter apparatus and methods using frequency doubling modulation
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US7123664B2 (en) * 2002-09-17 2006-10-17 Nokia Corporation Multi-mode envelope restoration architecture for RF transmitters
US7106816B2 (en) * 2002-12-18 2006-09-12 Qualcomm Incorporated Supporting multiple wireless protocols in a wireless device
US7860191B2 (en) 2007-09-07 2010-12-28 Qualcomm Incorporated Optimal two-layer coherent demodulation for D-PSK (Differential Phase Shift Keying)
JP5595883B2 (ja) * 2010-11-29 2014-09-24 株式会社東芝 無線通信装置

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Also Published As

Publication number Publication date
EP0621683A2 (de) 1994-10-26
EP1315283A3 (de) 2004-03-31
EP1315283A2 (de) 2003-05-28
US5446422A (en) 1995-08-29
US5392460A (en) 1995-02-21

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